/*
*  Copyright (c) 2001 Sun Microsystems, Inc.  All rights
*  reserved.
*
*  Redistribution and use in source and binary forms, with or without
*  modification, are permitted provided that the following conditions
*  are met:
*
*  1. Redistributions of source code must retain the above copyright
*  notice, this list of conditions and the following disclaimer.
*
*  2. Redistributions in binary form must reproduce the above copyright
*  notice, this list of conditions and the following discalimer in
*  the documentation and/or other materials provided with the
*  distribution.
*
*  3. The end-user documentation included with the redistribution,
*  if any, must include the following acknowledgment:
*  "This product includes software developed by the
*  Sun Microsystems, Inc. for Project JXTA."
*  Alternately, this acknowledgment may appear in the software itself,
*  if and wherever such third-party acknowledgments normally appear.
*
*  4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA"
*  must not be used to endorse or promote products derived from this
*  software without prior written permission. For written
*  permission, please contact Project JXTA at http://www.jxta.org.
*
*  5. Products derived from this software may not be called "JXTA",
*  nor may "JXTA" appear in their name, without prior written
*  permission of Sun.
*
*  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
*  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
*  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
*  DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
*  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
*  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
*  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
*  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
*  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
*  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
*  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
*  SUCH DAMAGE.
*  ====================================================================
*
*  This software consists of voluntary contributions made by many
*  individuals on behalf of Project JXTA.  For more
*  information on Project JXTA, please see
*  <http://www.jxta.org/>.
*
*  This license is based on the BSD license adopted by the Apache Foundation.
*
*  $Id: SynList.java,v 1.2 2006/06/12 20:45:23 nano Exp $
*/

package net.jxta.myjxta.misc.eliza;

import java.util.Vector;

/**
 *  Eliza synonym list.
 *  Collection of all the synonym elements.
 */
public class SynList extends Vector {

    /**
     *  Add another word list the the synonym list.
     */
    public void add(WordList words) {
        addElement(words);
    }

    /**
     *  Prnt the synonym lists.
     */
    public void print(int indent) {
        for (int i = 0; i < size(); i++) {
            for (int j = 0; j < indent; j++) System.out.print(" ");
            System.out.print("synon: ");
            WordList w = (WordList)elementAt(i);
            w.print(indent);
        }
    }

    /**
     *  Find a synonym word list given the any word in it.
     */
    public WordList find(String s) {
        for (int i = 0; i < size(); i++) {
            WordList w = (WordList)elementAt(i);
            if (w.find(s)) return w;
        }
        return null;
    }
    /**
     *  Decomposition match,
     *  If decomp has no synonyms, do a regular match.
     *  Otherwise, try all synonyms.
     */
    boolean matchDecomp(String str, String pat, String lines[]) {
        if (! EString.match(pat, "*@* *", lines)) {
            //  no synonyms in decomp pattern
            return EString.match(str, pat, lines);
        }
        //  Decomp pattern has synonym -- isolate the synonym
        String first = lines[0];
        String synWord = lines[1];
        String theRest = " " + lines[2];
        //  Look up the synonym
        WordList syn = find(synWord);
        if (syn == null) {
            System.out.println("Could not fnd syn list for " + synWord);
            return false;
        }
        //  Try each synonym individually
        for (int i = 0; i < syn.size(); i++) {
            //  Make a modified pattern
            pat = first + (String)syn.elementAt(i) + theRest;
            if (EString.match(str, pat, lines)) {
                int n = EString.count(first, '*');
                //  Make room for the synonym in the match list.
                for (int j = lines.length-2; j >= n; j--)
                    lines[j+1] = lines[j];
                //  The synonym goes in the match list.
                lines[n] = (String)syn.elementAt(i);
                return true;
            }
        }
        return false;
    }

}
